<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
</head>
<body>
<div>
  <h1>登录页面</h1>
  <input type="text" placeholder="用户名" v-model="user.username">
  <input type="password" placeholder="密码" v-model="user.password">
  <input type="button" value="登录" @click="log()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
 <script>
  let v = new Vue({
     el:"body>div",
     data: {
       user:{
         username: "",
         password: ""
       }
     },
     methods:{
         log(){
            axios.post("/log",v.user).then(function (response) {
                if (response.data==1){
                alert("登陆成功!");
                location.href="/";
                }else if(response.data==2){
                    alert("用户名不存在!")
                }else{
                    alert("密码错误!")
           }

         })
       }

     }
   })
   </script>
</body>
</html>